I posted something like this a couple of weeks ago. I was out shooting my dio and the Cobra Troopers were getting ultra rubbery. The VvV Vipers weren't as bad. Craig clued me in on the dangers of UV and light and heat on plastic. They're all fine now, but it did worry me a lil bit. In the end, don't leave them out for long and try to keep them in shade if not being used for pics. That goes for the camera too. lol.